The trick for me is to install a patch and start PD as the last step in the installation. After PD opens, I can go to the Capture tab and the appropriate capture icon becomes enabled (capture from TV signal). I cannot capture if I start PD any other way. If I choose not to run PD as the last step of the installation, I cannot capture when I do run PD later.
One reason I like PowerDirector for capturing from this device is that PD handles the VC500 audio correctly through the USB connection. Gateway DX4380, AMD A8-5500 Quad Core 3.2GHz with ATI Radeon HD 7560D; 16GB RAM; 1 TB SATA 7200 RPM; Windows 8 Pro 64-bit; PDR11, PDVD12.